import copy

# a = [1, [2, 3]]
# b = 2
# c = a
# c = copy.deepcopy(a)
# c = a[:]
# print(a, c)
# print(id(a), id(c))
# c=b
# c=22
# print(b)
a = 1
print(id(a))
print(id(1))
